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Topic: JB/RAD. DATING (Read 89 times)

John Baumgardner, Ph.DLos Alamos National Laboratory, RetiredPresented at the International Noah and Judi Mountain SymposiumŞirnak University, Şirnak, TurkeySeptember 27-29, 2013

<>- Abstract- ... This paper reviews research that shows that the key assumption underpinning [conventional geological] timescale, namely, the time invariance of nuclear decay processes, is false. - That conclusion is being affirmed by increasing numbers of publications reporting soft tissue preservation in animal fossils from deep in the geological record.

<NOTE1: Rapid decay of U is likely due to shock pressure. See CC/fast decay by high temp.>

Introduction

- A crucial assumption underlying the conclusion of no evidence [for the Great Flood] is that the standard geological timescale is generally correct. ... The issue is plain. Either the standard time scale is correct and there was no Flood ..., or the time scale is incorrect in a profound way and a global Flood cataclysm is a genuine possibility.- In this paper I review briefly the results of the Radioisotopes and the Age of the Earth (RATE) research effort completed in 2005 that found several independent lines of radioisotope evidence that the earth itself is only thousands, not billions, of years old. <1>- The clearest line of evidence is that zircons in granite with U-Pb ages of more than a billion years retain as much as 80% of their radiogenic helium. - The carefully measured diffusion rate of helium in zircon limits significant He retention to only a few thousand years. <2>- A second line of evidence are an abundance of damage patterns known as radiohalos caused by alpha particle radiation from radioisotopes of polonium whose half-lives vary between 164 microseconds to 138 days. - Extremely rapid radioactive decay of uranium in the close proximity seems logically required to account for the high concentrations of polonium required to generate these Po radiohalos in the short time window available.<3>- A third line of evidence is the consistent presence of readily measurable levels of 14C in plants and animals fossilized and buried deep within the geological record. - Due to the short 14C half-life, 14C from living things, with the best technology available today, ought to be undetectable beyond 100,000 years (17.5 half-lives). - Yet accelerator mass spectrometry (AMS) technology routinely reveals significant levels of 14C in organic samples from the Paleozoic, Mesozoic, and Tertiary portions of the geological record. - If the standard time scale is valid, how can Paleozoic samples contain levels of 14C that imply ages in the range of only thousands of years? - All three lines of evidence point strongly to the conclusion that nuclear decay rates have been much higher during episodes in the earth’s past than they are today. - The erroneous assumption on which radioisotope methods have relied, namely, that decay rates have been constant in the past, is the reason for ... the standard geological time scale....- With the radioisotope time scale removed as a mental barrier, then it becomes almost obvious that the fossil-bearing sedimentary rocks must correspond to sediments which were suspended, transported, and deposited during [a Great] Flood.- These rocks commonly contain internal evidence for high-energy processes and display large lateral transport scales. - Six global-scale erosional unconformities partition this fossil-bearing sediment record vertically into six global mega-sequences. - In addition, a vast amount of lateral plate motion, seafloor spreading, and ["subduction"] accompanied the formation of the sediment record. - Most of the second part of this paper describes work done since the mid-1980’s relating to the concept of catastrophic plate tectonics. ... - - Radioisotope dating—why the time scale cannot be absolute- Radioisotope dating methods rely critically on the assumption that nuclear decay rates have remained constant over the entire course of earth history. - Without this assumption a true absolute chronology is not possible from these methods.

<RATE TEAM>- In 1997 a team of seven researchers, with expertise in physics, geophysics, and geology, began a project specifically to explore why radioisotope methods yield an age for the earth of some 4.6 billion years....- This eight-year research effort known as RATE, for Radioisotopes and the Age of the Earth, yielded several independent lines of radioisotope evidence which argue forcefully that the assumption of time-invariant nuclear decay rates since the earth has been in existence is false. - The final technical report for this project is Radioisotopes and the Age of the Earth: Results of a Young-Earth Creationist Research Initiative, Volume II, edited by L. Vardiman, A. Snelling, and E. Chaffin and published in 2005. - This report is available online, with each of the ten chapters available as a separate PDF file, at http://www.icr.org/rate2 . - Figure 1 is a photo of the RATE team.- - Noah's Flood - The RATE team included seven research scientists- Figure 1. The RATE team included seven research scientists. Middle row, L-R: Andrew Snelling, Ph.D., geology; Steven Austin, Ph.D., geology; Donald DeYoung, Ph.D., physics. Front row, L-R: John Baumgardner, Ph.D., geophysics, Larry Vardiman, Ph.D., geophysics; Russell Humphreys, Ph.D., physics; Eugene Chaffin, Ph.D., physics. Back row, L-R: John Morris, Ph.D., President of the Institute for Creation Research; Kenneth Cumming, Ph.D., Dean, Institute for Creation Research Graduate School; William Hoesch, M.S., laboratory technician; Steven Boyd, Ph.D., professor of Biblical Hebrew.- - High levels of He retention in zircons

<ZIRCONS>The clearest and simplest line of evidence undergirding this conclusion involves the high levels of helium retention in zircon crystals from Proterozoic crustal basement rock of mid-continent North America. - Zircon, ZrSiO4, is a common auxiliary mineral in granitic rocks and typically contains from 10 ppm to 1 weight percent uranium. - Because of its hardness, its high melting temperature, and the fact that essentially no Pb is included in its structure when it crystallizes, zircon has been used widely for dating crustal igneous and metamorphic rocks. - The samples used in this study was from core recovered from a 4.3 km deep research well designated as GT-2 near Fenton Hill, New Mexico, drilled by researchers at Los Alamos National Laboratory in the 1970’s to explore the feasibility of hot dry rock geothermal energy extraction. - The radioisotope age determined for this core, based on the U, Th, and Pb levels measured in its zircons was 1.50±0.02 Ga (Zartman 1979). - Samples of this core were also sent to Oak Ridge National Laboratory in the late 1970’s for additional analysis. Researchers there found extraordinary levels of radiogenic helium in the zircons. - For example, in a sample from a depth of 960 m, 58% of the He arising via alpha decay of U and Th decay over the rock’s history was still present (Gentry et al., 1982). - RATE analysis of rock from this same core found 80% retention from a sample at 750 m depth and 42% retention from a sample at 1490 m depth (Vardiman et al. 2005, 29). - Table 1 below provides the helium retention measurements data for five samples (numbered 1-5) reported by Gentry et al. (1982), plus the two (2002 and 2003) analyzed by the RATE team. - Temperatures logged during the drilling process for the sample depths ranged from 96°C at 750 m to 313°C at 4310 m depth. - The varying helium retention ratios are consistent with the fact that gaseous diffusion rates increase with temperature.- Table 1. Helium retention in zircons from core from drill hole GT-2, Fenton Hill, New Mexico. Q/Q0 is the ratio of the measured helium concentration in the zircons to the amount generated by U and Th decay based on the measured amount of radiogenic Pb present. Samples 1-5 are from Gentry et al. (1982). Samples 2002 and 2003 are from the RATE study reported in Vardiman et al. (2005).- - Noah's flood - Helium retention in zircons- Even before the RATE study, it was clear that the retention levels reported by Gentry et al. (1982) were nearly impossible to reconcile with the U-Pb age of the samples. - Published diffusion rates for helium in other solids suggested that the radiogenic helium in the zircons ought to be undetectable. - Because the helium diffusivity in zircon had never been measured, the RATE team considered it of high priority to obtain that experimental information. - The RATE team therefore contracted with what they deemed the best laboratory in the world to measure zircon He diffusivity. - The laboratory was provided with 1200 zircons, 50-75 µm in length, separated from core from borehole GT-2 at a depth of 1490 m, some of which are shown in Figure 2.- The laboratory procedure involved measuring the amount of helium that escaped from the zircons as they were maintained at carefully controlled temperatures under vacuum conditions for one-hour intervals. - Escaped helium was measured for each of 28 separate temperature values as the temperature was stepped multiple times over the range 200-500°C. - A total of 1356 x 10^-9 cm3 helium at STP was collected from 216 mg of zircon. These values are the basis for the entries in Table 1 of 6.3x10^-9 cm3/mg helium and 42% helium retention shown for sample 2003.- - Creation Science Photo of zircons used in the He diffusivity analysis- Figure 2. Photo of zircons used in the He diffusivity analysis. These were separated from core extracted from borehole GT-2 at Fenton Hill, New Mexico, from a depth of 1490 m.- Figure 3 displays the zircon He diffusivity values provided by these laboratory measurements. - It also highlights the fact that the helium retention values shown in Table 1 are indeed dramatically higher than one should expect if indeed the actual rock crystallization age is 1.5 Ga. - These data suggest a much briefer history for this crustal rock, on the order of only 6000 years. - The zircons provide two almost entirely independent clocks for determining rock age, one based on the rate of nuclear decay of U and Th to Pb and He in the zircons, and the second based on the rate of diffusion of He through zircon into the much more diffusive biotite that hosts the zircons in the polycrystalline granitic rock. - There is a discrepancy of a factor of approximately 250,000 in the elapsed time the two clocks provide. - The obvious question is what is the source of this huge discrepancy?- ... Helium diffusivity in zircon from direct experimental measurement- Figure 3. Helium diffusivity in zircon from direct experimental measurement compared with diffusivities implied by helium retention values from Table 1 for two different values of elapsed time since zircon formation. Error bars represent 95% confidence intervals. Note that there is approximately a factor of 10^5 between the diffusivities implied by the two elapsed times.- Much more detail on the experimental procedures, assumptions involved in the translation of the measurements into diffusivity values, and discussion of many possible alternative explanations of the results is included Chapter 2 of Vardiman et al. (2005) [also available as (Humphreys 2005)].

<RADIOHALOS>- - Polonium radiohalos—from where does the Po arise?- A second major study undertaken by the RATE team focused on the phenomenon of polonium radiohalos. - Radiohalos are microscopic spherical shells of damage in minerals such as biotite produced by alpha particles emitted by radioactive elements which are localized at the center of the spherical pattern. - These features were first reported in the 1880’s, but their cause remained a mystery until after the discovery of radioactivity in the 1890’s. - In the following decade Joly (1907) and Mügge (1907) independently suggested that the patterns of darkening observed around small inclusions in minerals such as biotite was due to alpha particles emitted by radioactive species within central mineral inclusions. - Subsequently, it has been confirmed that commonly it is a tiny crystal of zircon which hosts U or a crystal of monazite that hosts Th at the center of a radiohalo.- For the case of 238U, there are eight alpha-emitting species, 238U, 234U, 230Th, 226Ra, 222Rn, 218Po, 214Po, and 210Po, in the decay chain which culminates with 206Pb, which is stable. - Each alpha-emitting species has a distinctive alpha particle energy. - Because the radius of the shell of damage is related to the alpha energy, a mature 238U radiohalo ideally has eight distinct shells. - However, because the alpha energies of some of the species are so similar, often it is difficult under the microscope to distinguish some of the shells from others that have similar energies. - In biotite these shells vary in radius from about 13 to 35 µm. - About 500 million to a billion 238U decays are required to generate a mature halo. - Zircons 1 µm in diameter typically have sufficient U to produce mature halos. - A photograph of a 238U halo is displayed in Figure 4. - For the case of radiohalos produced by 232Th, there are seven rings corresponding to the seven alpha-emitting species in the 232Th decay chain which culminates with stable 208Pb.- ... radiohalo in biotite- Figure 4. 238U radiohalo in biotite. Alpha particles consisting of two protons and two neutrons from the eight alpha emitting radioisotopes in the 238U decay chain which are localized within a central zircon crystal generate eight spherical zones of damage in the surrounding lattice of a larger host biotite crystal. Each radioisotope has its own characteristic alpha particle energy. Penetration distance in the biotite depends on alpha particle energy. The radius of the 238U ring is about 13 mm, while that of the 214Po ring is about 35 mm. (Photograph courtesy of Mark Armitage)- Biotite, a common mica mineral in crustal crystalline rocks, has been the mineral of choice in the study of radiohalos. - This is because biotite is the majority mineral in which U and Th radiohalos occur. - It is also because of the ease of thin section preparation and the clarity of the halos in these thin sections. - Biotite is a sheet silicate, with the sheets weakly bound together by potassium atoms. - The sheets cleave easily, exposing radiohalos in cross-section when halos are present. - Using clear Scotch™ tape, biotite flakes can readily be cleaved and dozens of individual biotite sheets transferred to a single microscope slide for inspection.- Of particular interest are sheets that intersect mid-planes of a spherical radiohalo.- When viewed under a microscope, such sheets display the halo in cross-section with concentric circular rings, as Figure 4 illustrates.- Some unusual radiohalo types have been discovered besides those formed by 238U and 232Th. - The most notable ones are those formed by polonium. - There are three Po isotopes in the 238U decay chain, 218Po with a half-life of 3.1 minutes, 214Po with a half-life of 164 ms, and 210Po with a half-life of 138 days. - Po radiohalos with rings produced exclusively by one or more of these Po alpha-emitting isotopes have been recognized for more than 90 years. - Joly (1917, 1924) was probably the first to identify 210Po radiohalos and was unable to account for their origin. - Schilling (1926) found Po halos along cracks in fluorite and proposed that they originated from preferential deposition of Po from U-bearing solutions. - Henderson (1939) and Henderson and Sparks (1939) advanced a similar hypothesis to explain Po radiohalos along conduits in biotite. - The reason for invoking secondary processes to explain the origin of Po radiohalos is simple — the half-lives of the Po isotopes are far too short to be explained by their original presence in the granitic magma that cooled and crystallized to yield the rocks in which Po halos are presently found. - For example, the half-life of 218Po is only 3.1 minutes. - Moreover, there are no crystalline inclusions at the centers of the Po radiohalos similar to the zircons that are typically at the centers of 238U radiohalos. - Instead there are voids. Figure 5 displays a 218Po halo.- flood6- Figure 5. 218Po radiohalo in biotite. This halo is overexposed in terms of the amount of alpha radiation that has formed it. This overexposure has caused its rings to be reversed, that is, to be light in color instead of being dark. Note the lack of a crystal at the center.- Yet accounting for these radiohalos by secondary processes is also fraught with difficulty.

<?>- First, if the Po is derived from 238U, then there is the need to separate the Po isotopes and/or their beta-decay precursors from the parent 238U, since evidence in these halos for prior presence of alpha-emitting precursors is missing. <I THINK THE PO PROBABLY HAD NO PRECURSORS & WAS MADE BY FUSION.>

- Second, the number of Po atoms needed to produce a mature 218Po, for example, at the center of the halo is vast. - Gentry (1974) estimated that as many as 5x10^9 atoms, or greater that 50% of the volume of the radiocenter, are required. - It has been difficult to imagine what sort of physical process might yield such high localized concentrations of Po atoms within a very short time available, especially if these atoms had to migrate or diffuse from their source into the biotite crystals where the radiohalos are now found. - A third problem is that if rock temperature exceeds 150°C the damage caused by the alpha particles is annealed and the radiohalo disappears. <MAYBE SHOCKWAVES CAN FUSE PO WITHOUT PRODUCING THAT MUCH HEAT.>

- Hence, whatever the secondary process might have been for transporting the Po from its source to the radiocenter, temperatures must have been modest.- The restrictions on Po radiohalo formation are so extreme that it seems that highly extraordinary circumstances were in play for radiohalos derived from Po to exist at all. - In its beginning attempts to understand how Po halos might have formed, the RATE team reasoned that almost certainly that, because of the short isotope half-lives, the Po could not be associated with the primary crystallization of the rocks in which Po halos are found. - This implies, as the early investigators surmised, that the Po had to be transported to the Po radiocenters by some secondary process. - Moreover, the RATE team concluded that one almost indispensable requirement was an adequate nearby source of Po atoms. - 238U in close proximity seemed to be the most likely Po source. - Further, the RATE team reasoned that the lack of alpha-emitting precursors to Po in the radiocenters and the constraint of low temperatures in the preservation of the halos pointed to aqueous fluid as the likely transport agent.- Because the RATE team realized keenly that further investigation of the phenomenon of Po radiohalos could possibly shed important light [on] the history of nuclear decay in the earth, a campaign was launched to sample granitic bodies at many localities around the world and to search for the presence of radiohalos, especially Po halos. - Fairly early in this campaign a major discovery was made. - It was found that Po halos, especially 210Po halos, were spectacularly abundant in Paleozoic and Mesozoic granitic plutons. - They seemed to be most abundant near the pluton axis, where the final vestiges of hydrothermal fluids would have been retained as the plutons cooled and crystallized.- Amazingly, in the majority of the 32 different Paleozoic/Mesozoic granite bodies studied, 210Po radiohalos outnumbered all other radiohalo types, including those of 238U. - Sums over all 32 granite bodies yielded 14,384 210Po halos, 1,331 214Po halos, 390 218Po halos, 10,917 238U halos, and 264 232Th halos. - Radiohalos of all types were significantly less abundant in the 19 different granite bodies studied of Precambrian age. - Sums over these 19 granite bodies yielded 1,736 210Po halos, 23 214Po halos, two 218Po halos, 508 238U halos, and three 232Th halos. - In the seven granites of Tertiary age investigated, radiohalos were found in only one of them, in which nine 210Po halos and two 238U halos were identified. - The obvious reason for the near absence of radiohalos of Tertiary age is that not enough nuclear decay has elapsed since the beginning of that point in the rock record to generate mature radiohalos. - A plausible reason for fewer radiohalos in Precambrian rocks is that heating from metamorphic activity and burial likely annealed many of the halos which earlier may have been present.<NOTE2: Another reason may be that Precambrian was not shocked similarly. See NOTE1.>

- The discovery and documentation of such an astonishing number [of] Po radiohalos in Phanerozoic rocks, hundreds to thousands in some individual samples, makes the enigma of their origin all the more acute. - The finding that the Po halos were generally most abundant in the cores of granitic plutons where convective cooling of the plutonic bodies by aqueous fluids was the most prolonged strongly suggested that such hydrothermal fluids played a key role in their formation. - Snelling (2000) pointed out that there are reports of 210Po as a detectable species in present-day volcanic gases, in hydrothermal fluids associated with subaerial volcanoes and fumaroles as well as in hydrothermal fluids from mid-ocean ridge vents and in associated chimney deposits [LeCloarec et al. 1994; Hussain et al. 1995; Rubin 1997]. - 210Po has also been well documented in groundwater [Harada et al. 1989; LaRock et al. 1996]. - The distances involved in this fluid transport of the Po in some cases are several kilometers.- Despite the fact that Po isotopes are usually present in hydrothermal fluids in crustal magmatic contexts today, their concentrations are so minute that it is difficult to conceive how such water-borne Po could possibly form a radiohalo in biotite in a granitic rock. - The constraint that halo formation must occur at temperatures below 150°C implies that the plutonic bodies had already crystalized and were in the final stages of cooling when the Po halos that exist today actually formed. - The time window for cooling from 150°C until the temperature drops below what is needed to sustain convective flow is brief. - How could there be sufficient Po generated, presumably from 238U in the close proximity, to produce these halos? - The RATE team concluded, similar to their conclusion relative to the cause for the high He retention in zircons in granite, that dramatically increased rates of 238U decay during the interval of halo formation is close to a logical necessity.<WHY WOULD STABLE 238U DECAY DURING HALO FORMATION? SHOCK WAVE?>

- An issue still unsolved is, even if high concentrations of Po were present in the fluids in the final-stage cooling of a granitic pluton, what might trigger localized precipitation of Po from solution to emplace a billion or so Po atoms in a spherical volume a fraction of a mm in diameter within the stacked leaves of a biotite crystal. - The RATE team speculated that some sort of positive feedback mechanism involving Po and Pb and likely some other chemical species might have played a role. - Precipitation of a few atoms of Po out of solution at the site of a crystalline defect in the biotite could have initiated the process. - If the chemical presence of Pb resulted in increased scavenging of Po from solution, then the decay of Po to Pb could conceivably accelerate the Po accumulation at the local site to a point of runaway. <WHAT ABOUT REVERSED DECAY OF PB TO PO?>

- Further research is clearly appropriate.

<C14>- - 14C still present in Paleozoic and Mesozoic fossils- A remarkable discovery that accompanied the introduction in the early 1980’s of accelerator mass spectrometry (AMS) for measuring radiocarbon levels was the finding that organic samples from every part of the Phanerozoic portion of the geological record displayed significant and reproducible levels of 14C. - This finding was entirely unexpected because the half-life of 14C, 5730 years, is so brief relative to the span of time conventionally assigned to the Phanerozoic portion of earth history. - Indeed, 14C decays to levels undetectable by any technology available today after only 100,000 years (17.5 half-lives). - After one million years (175 half-lives) the amount of 14C remaining is only 3x10^-53 of the starting concentration. - So investigators were puzzled to find 14C/C ratios of 0.1-0.5% of the modern value (percent modern carbon, or pMC) in samples they assumed would be entirely 14C-free because of their location in the geological record. - At first the anomalous 14C was assumed to be a result of faulty laboratory procedures that somehow allowed the samples to be contaminated with a modest amount of modern carbon. - Because this phenomenon was being observed at most [if] not all of the AMS 14C laboratories around the world, it generated a significant number of professional papers in the peer-reviewed radiocarbon literature. - A few minor sources of contamination were identified in the laboratory procedures. - However, after these were corrected, the bulk of the 14C signal still remained.- Table 1 on pp. 596-597 in Vardiman et al. (2005) [also available as (Baumgardner 2005a)] lists over 40 examples from these professional papers of fossil materials, such as wood, coal, bone, and shell, from fossilized organisms that, based on their location in the geological record, ought to be entirely 14C-free. - Each of these samples, however, displayed a 14C value in the range of 0.1-0.65 pMC. - A specific example was that of anthracite coal described by Vogel et al. (1987). - In this study, designed to look for sources of contamination in their AMS procedures, the researchers varied the sample size over a range of 2000, from 10µg to 20mg. - Samples 500µg and larger yielded a 14C level of 0.44±0.13 pMC, independent of sample size. - The smaller sample sizes indicated a constant level of contamination, independent of sample size, which the researchers were able to identify and eliminate. - After making corrections to their laboratory procedures, they concluded that the remaining 14C they were measuring was intrinsic to the coal itself. - They chose to refer to it as “contamination of the sample in situ,” “not [to be] discussed further.” - This example is representative of the others listed in that table.- The range of 0.1-0.5 pMC so routinely measured in organic Paleozoic, Mesozoic, and Tertiary samples corresponds to 14C ages between 57,000 and 44,000 years.

<LAB BIAS>- In recent times it has become standard policy for AMS labs not to assign an ‘age’ to samples that otherwise would date older than 50,000 years. - For example, the AMS laboratory at the University of Arizona states on their home page, “The maximum radiocarbon age which can be measured at the facility is about 48,000 B.P.” - This policy is employed to hide this embarrassing state of affairs as much as possible. - Yet the AMS hardware is technically able to resolve 14C/C ratios as low as 0.001 pMC, corresponding to 95,000 years—more than two orders of magnitude smaller than the 0.24 pMC that corresponds to 50,000 years. - The excuse the AMS laboratories give for not reporting ages for samples greater than 50,000 years is that the 14C levels in older samples fall below the laboratory’s ‘standard background’ value. - Yet the peer-reviewed radiocarbon literature of the 1980’s and 1990’s reveals that standards such as natural gas were then commonly used by major AMS laboratories as their ‘standard background, with 14C/C ratios below 0.1 pMC (e.g., Beukens 1990). - The present practice of choosing a high ‘standard background’ value has nothing to do with the technical capabilities of the AMS hardware or with the current state-of-the-art in sample processing methods. - The high value is employed solely to allow a laboratory not to be asked to explain the high pMC value in a sample that ought to be entirely 14C-free by virtue of its location in the geological record.

- Because significant 14C levels in fossils from Paleozoic and Mesozoic strata conflict so profoundly with the standard time scale, the RATE team decided to see if it could reproduce these findings. - The team obtained ten coal samples from the U.S. Department of Energy Coal Sample Bank that is maintained at Pennsylvania State University for the purpose of coal research. - Samples in this repository are from the economically most important coalfields of the United States. - Theses samples were collected originally in 180 kg quantities from recently exposed areas in active coal mines and quickly sealed under argon in 115 liter steel drums. - As soon as feasible after collection, these large samples were processed to obtain representative 300 g samples with a 0.85 mm particle size (20 mesh). - The smaller 300 g samples were sealed under argon in multi-laminate foil bags and have since been kept in refrigerated storage at 3°C. - The RATE team selected a set of ten of the 33 coals available with the objectives of good coverage geographically and with respect to depth in the geological record.- The set contained three Eocene, three Cretaceous, and four Pennsylvanian coals.- The RATE team sent samples from these ten coals to what it deemed to be the best AMS 14C laboratory in the world and requested the highest precision analysis that the laboratory offered. - High precision was achieved by generating four separate AMS targets for each sample, analyzing 16 separate spots on each of the targets, and performing a variance test on the 16 spots, eliminating any of the 16 that fail the variance test. - The laboratory’s standard background standard was 0.077±0.005 pMC, one of the lowest in the world at that time. - This background was subtracted from the actual measured values. - The results for the ten samples are summarized in Figure 6. - The mean value across the ten samples was 0.247 pMC. - There was no significant difference statistically in 14C levels among the samples grouped according to position in the geological record. - The results from these RATE samples agree closely with what was already well established in the radiocarbon literature, namely, that organic remains from the Paleozoic, Mesozoic, and Tertiary routinely yield 14C/C ratios in the range 0.1-0.5 pMC. - Again, these results are in stark conflict with what should be expected if the standard geological time scale is correct. - The four RATE samples from the Pennsylvanian Period, with conventional ages of about 300 million years, for example, yielded 14C ages of 44,500 years, 54,900 years, 51,800 years, and 48,300 years.- - Histogram of 14C results for the ten RATE coal samples- Figure 6. Histogram of 14C results for the ten RATE coal samples. Translating percent modern carbon to 14C age gives a range for these samples between 44,500 years and 57,100 years and an average of 49,600 years. (From Vardiman et al. 2005, 606)- How does the RATE team account for this huge discrepancy? - What is the source of the 14C? ...- The RATE team ... noted that the 14C/C ratio in organisms that lived before the [APPARENT MEGATSUNAMIS] might well have been perhaps a hundred times lower than the present atmospheric 14C/C ratio due the very large amount of plant and animal life alive at the time ... as implied by the vast stores of coal and oil in the fossil-bearing rock record. - If the total amount of 14C was roughly the same as today, then the 14C/C ratio would be significantly smaller in the atmosphere and in living organisms before the [CATACLYSM]. Taking this possibility into account could explain how organisms alive at the time ..., perhaps only 5,000 years ago, actually yield 14C ages today in the range of 50,000 years.- However, the large variance in the 14C/C ratios in the remains of the fossilized plants and animals indicates the full explanation is more complex. - The RATE team also noted that accelerated nuclear decay of U and Th during the Flood must have generated high fluxes of neutrons in the continental crust, including its sediment layers. - Section 7 in Chapter 8 in Vardiman et al. (2005) provides a survey of measurement data for the thermal neutron flux levels in granitic environments today. - It also provides an estimate of the amount of 14C generation that would occur in carbon-bearing materials in crustal environments, if accelerated nuclear decay occurred during the Flood, as thermal neutrons interacted both with 14N and 13C to form 14C. - The levels of 14C generated in this manner can readily account for the variance in 14C levels measured in fossil material in Flood deposited sediments. - The variance arises mostly from the large variations from place to place in crustal environments in the concentrations of U and Th.- Although the high levels of 14C in fossilized organisms from Paleozoic, Mesozoic, and Tertiary portions of the rock record do not directly demonstrate that accelerated nuclear decay in radioactive species with long half-lives such as 238U, 232Th, 40K, and 87Rb occurred, the high 14C levels are highly consistent with that inference. - They are consistent, first, because accelerated decay of the long half-life species collapses the time scale of the portion of the rock record associated with the Flood from roughly 600 million years to a single year a few thousand years ago.- This means that 14C in organisms alive at the onset of the Flood should still be detectable today. - Second, 14C produced from neutrons generated by accelerated decay in crustal rocks seems to be able to account for the large variance in 14C levels in the organisms buried by the Flood and preserved today as carbon-bearing fossils. - Thirdly, 14C produced in this manner also seems to account for the rapid rise in atmospheric 14C levels after the Flood cataclysm, as indicated by increasing 14C levels occurring during the lifetimes of individual Pleistocene organisms (Nadeau et al. 2001; Vardiman et al. 2005, 598-600) as CO2 containing high levels of 14C outgassed from crustal rocks into the atmosphere.- It is noteworthy to point out that the quantum transitions involved with beta decay of 40K, 87Rb, 187Re, and 176Lu are, what are referred to as ‘forbidden’, and result in long half-lives. - By contrast, beta decay of 14C to 14N involves an ‘allowed’ nuclear transition and results in a short half-life. - There is reason to suspect that, whatever the cause for the accelerated decay of the long half-life species whose decay involved a ‘forbidden’ nuclear quantum transition, the cause did not affect radioactive species whose decay involved an ‘allowed’ transition. - These issues are discussed in Chapter 7 of Vardiman, et al. (2005).

- - A radically revised time scale- To summarize this long section describing the work of the RATE team, this research identified three largely independent lines of radioisotope evidence that each supports the conclusion that nuclear decay rates for the long half-life species commonly used for radioisotope dating have not been constant over the earth’s physical history. - The retention of large fractions of the radiogenic helium in Proterozoic crustal zircons points directly to this conclusion. - The frequent occurrence of Po radiohalos in Phanerozoic granitic plutons logically seems to require accelerated decay during the Flood to account for the extreme concentrations of Po needed to generate Po radiohalos in Flood age rocks. - Finally, the high levels of 14C in fossilized organisms that were living before the Flood seem logically to require an episode of accelerated nuclear decay during the Flood to collapse of the standard Phanerozoic time scale accordingly. - The 14C formed in crustal rocks for neutrons resulting from such an episode of rapid nuclear decay also explains the large variance in 14C levels in the fossilized samples as well as the required rapid increase in atmospheric 14C levels after the Flood to yield near modern levels by about 3500 years ago. - Finally, the high levels of He retention in zircons that had a U-Pb age of 1.5 Ga in the RATE study also seems to require an episode of accelerated decay prior to the one during the Flood to account for all its decay products within the 6,000 year limit implied by the measured zircon He diffusivity. ...

<FOSSIL TISSUES>- - Original tissue preservation in fossils affirms the RATE conclusions- Not only does the RATE research strongly point to the conclusion that the assumption of time-invariant nuclear decay rates causes the standard radioisotope time scale to be seriously in error, other recent findings confirm that the fossil record was formed, not over a span of a half billion years, but quite recently over a brief interval of time. - One example is the finding of well-preserved soft tissue in bone from a T. rex recovered from the Hell Creek Formation in Montana, U.S.A. - The soft tissue included flexible blood vessels containing red blood cells. - This astonishing result was reported in the March 25, 2005, issue of the journal Science, volume 307, pages 1852 and 1952-1955. - Figure 8 are photographs from this report. - More recently, preserved original tissue has been documented in horn of a Triceratops also recovered from the Hell Creek Formation as reported in Armitage and Anderson (2013). - It is unimaginable that such soft tissue could be preserved for the 65 million years as asserted by the standard geological time scale.- - Images of flexible blood vessels (left) and red blood cells within them (right)- Figure 8. Images of flexible blood vessels (left) and red blood cells within them (right) extracted from a hind limb of a T. rex dinosaur found in the Hell Creek Formation in Montana as reported in Mary H. Schweitzer et al., 2005, “Soft-tissue vessels and cellular preservation in Tyrannosaurus rex,” Science 307:1952-1955....

- - Fossil graveyards- Another related line of evidence for the reality of catastrophic conditions is fossil graveyards (Snelling 2009, 537-548 and 569-575). - To preserve a fossil generally requires catastrophically rapid burial. - Otherwise, scavengers, insects, and bacteria will quickly degrade the organism such that little is left. - Throughout the record well-preserved fossils are abundant. - The standard community currently is astonished by the rapidly increasing number of reports of original tissue preservation, including, as mentioned above, still elastic blood vessels containing red blood cell from dinosaur bone. - Even apart from the issue of original tissue preservation, there is clear evidence in many cases for catastrophic conditions associated with the burial of the organisms. - One example is the dinosaur graveyard preserved at Dinosaur National Monument near the Colorado-Utah border just east of Vernal, Utah. - At this site there are several dozens of dinosaurs which were buried together under violently catastrophic conditions. - Most of the dinosaurs were torn apart, with burial was so rapid that, within individual portions of the dinosaur carcasses, the bones remained articulated, as displayed in Figure 19. - The fossils at Dinosaur National Monument are in the Morrison Formation, which has yielded more dinosaur fossils than any other formation in North America (Snelling 2009, 571).

- - Dinosaur bones in the Jurassic Morrison Formation at Dinosaur National Monument on the border between Colorado and Utah- Figure 19. Dinosaur bones in the Jurassic Morrison Formation at Dinosaur National Monument on the border between Colorado and Utah. Bones from a large number of dinosaurs are here found jumbled together, yet in several cases, vertebrae are still articulated in sections of spinal column, suggestive of violent conditions of death and burial. (Photo from U. S. Park Service)- The vast lateral extent of the Morrison Formation of more than 1.5 million km2 is shown in Figure 20. - Noteworthy is the astonishing amount of volcanic ash this formation contains throughout its range, probably from catastrophic, subduction-related volcanic activity to the southwest in what is now California.- - Lateral distribution of the Jurassic Morrison Formation, covering an area of more than 1.5 million km2- Figure 20. Lateral distribution of the Jurassic Morrison Formation, covering an area of more than 1.5 million km2. (From Morris 2012, 112)- - Coal deposits point to catastrophic process- The sediment record also displays widespread evidence for transport and burial of staggering volumes of plant material (Snelling 2009, 549-568). - The Powder River Basin in northeastern Wyoming and southeastern Montana is a spectacular example. - Containing the largest coal deposit in North America, it supplies the United States with 40% of its coal. - With its low sulfur content, much of it is exported abroad. - The coal bed, shown in Figure 21, locally reaches 30 m in thickness and covers an area of more than 50,000 km2. Structural indicators within the coal itself reveal that the majority of the plant material was originally conifer trees that grew elsewhere and were transported to their present location. - The volume of plant material required to form such thick, laterally extensive layers of coal testifies unmistakably to catastrophic circumstances.- - Strip mining of the Paleocene Powder River Basin coal in northeastern Wyoming- Figure 21. Strip mining of the Paleocene Powder River Basin coal in northeastern Wyoming. Seam is up to 27 m in thickness at this location. This is the largest coal deposit in the United States and supplies 40% of the nation’s coal. Evidence is compelling that the plant material from which the coal formed was transported from elsewhere and buried here.

...- - Conclusions- We have seen that one of the main reasons that people trained in the sciences today ignore ... a recent global Flood cataclysm is that they are persuaded that the standard geological time scale is in large measure correct. Several generations of scientists now have come and gone with no serious challenge to this nearly universal conclusion.- Recently, however, there have emerged diverse lines of evidence that call this long-held conclusion into question.- Probably the easiest one for most people to grasp is the discovery of well-preserved original tissue in all sorts of organisms from deep in the geological record.- One of the best examples is that published in 2005 by Mary Schweitzer of flexible blood vessels still containing red blood cells from a T. rex femur.- However, it is radioisotope dating of rocks that undergirds the conviction of most scientists that the earth truly is billions of years old and that some 65 million years have elapsed since dinosaurs were alive.- It is this radioisotope data that causes most scientists to remain steadfast in their convictions regarding the age of the earth’s rocks despite the soft tissue discoveries.- To me this is why the research results of the RATE team are so important.- The RATE results identify the root cause of the conflict.- They reveal the precise reason why the radioisotope data consistently indicate the earth is billions of years old....- The reason is, quite plainly, that the assumption of the constancy of nuclear decay rates is wrong.- The high retention levels of radiogenic helium in zircons are a direct affirmation of this conclusion.- Although not quite as direct, the widespread presence of polonium halos in granitic rocks and the ubiquitous presence of C-14 from deep in the geological record, also RATE findings, likewise affirm that nuclear decay rates must have been considerably higher during episodes in the past than they are today....- Therefore, the logic seems simple that the portion of the rock record filled with fossils must be the portion of the rock record generated by the Flood.- The implication is that the Flood was a cataclysm of a magnitude and intensity that is almost beyond the human mind to imagine.- In some regions kilometers of crystalline rock was eroded away by turbulent water, while in others kilometers of sediment was deposited in laterally extensive layers, many covering hundreds of thousands of square kilometers.- Below the oceans, all the seafloor from before the Flood was rapidly subducted into the mantle at ocean trenches while entirely new seafloor was created by seafloor spreading at mid-ocean ridges.- The rapid plate motion rifted apart the pre-Flood continent, moving the resulting continent blocks thousands of kilometers across the face of the earth.- This paper summarizes a few of the physical aspects of this cataclysm that have been investigated by numerical modeling.- Included is a beginning attempt to model the erosion, sediment transport, and sediment deposition of the Flood at the global scale.- One objective is gain insight into the mechanisms responsible for the megasequences that are a prominent aspect of the fossil-bearing sediment record across the world, including the erosional unconformities that separate them from one another.- The paper also summarizes efforts to investigate some of the large-scale tectonics aspects of the cataclysm.- Some progress seems to have been made to understand how ocean lithosphere from near the earth’s surface could possibly plunge through some 2800 km of solid rock to reach the core-mantle boundary within only a few weeks’ time. Some progress also appears to have been made in modeling surface plate motions during the cataclysm....- the Flood is responsible for the fossil-bearing sediment record, from the Ediacaran to the early P[l]iocene.